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Paspalum conjugatumP.J. Bergius

Bergius, Acta Helv. Phys.­Math. 7:129, pl. 8.1762

Stoloniferous perennial, 30-100 cm or more tall;culms sometimes decumbent at base, simple or sparingly branched,glabrous; stolons long, leafy. Sheaths longer than the internodes,pubescent on collar, ciliate; blades 8-17 cm long, 5-15 mm wide,usually sparsely pubescent throughout, the margins scabrous orciliate. Inflorescences terminal, or 2 (rarely 3) racemes(conjugate or nearly so), 7-16 cm long; rachis winged, the marginsscabrid; spike­lets ovate, 1.4-2.2 mm long, solitary,short-pedicellate, plano-convex, long-ciliate; first glume andsterile lemma covering fruit. Fruits plano-convex, ovate,  1.4-2.2 mm long. Croat 5854.

Common to locally abundant in clearings.Apparently flowering all year, especially during the late dryseason and throughout the rainy season.

Fruits are dispersed by birds and by passinganimals, attaching themselves by the long vinous trichomes on themargin of the spikelet. Ridley (1930) reported the tri­chomesto be coated with a viscous substance.

Cosmopolitan tropical weed. In Panama, known from tropical moistforest in the Canal Zone, all along the Atlantic slope, and inHerrera, Panama, and Darien; known also from premontane wetforestin Chiriqui and Panama and from tropical wet forest inColon.

Paspalum  conjugatum
Paspalum conjugatum
Enrique Moreno, David Roubik
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